Strontianite
| Formula | SrCO3 |
| Origin | Drensteinfurt, Münster (Germany) |
| Description | colourless strontianite |
| Classification (Lapis) | Sulfates |
| Crystal System | orthorhombic |
| Hardness | 3,5 |
| Colour | colorless, gray, pale yellow, pale green, yellowish brown, pale red, may be longitudinally zoned; colorless in transmitted light |
| Streak | white |
| Luminescence | bluish white, pink |
| Luster | vitreous |
| Transparency (Opacity) | transparent to translucent |
| Cleavage | perfect |
| Fracture | uneven to subconchoidal |
| Magnetism | negative |
| Geological Setting | in the oxidized zone of rapidly weathering sulfide-bearing rocks |
| Specific Gravity | 3,01 g/cm3 |
crystal model
#© Mark Holtkamp
